martha: there are new details on te'o manti's story. when did he find out, why did he keep it going. we'll talk about that. bill: decades of denials, lance armstrong finally coming clean admitting he took performance-enhancing drugs to win the tour de france. why do athletes continue to lie. dr. keith ablow on that. >> if i didn't like what somebody said, for whatever reasons in my own head, whether i viewed that as somebody being disloyal or a friend turning on you, or whatever, i tried to control that. [ male announcer ] with over 50 delicious choices of green giant vegetables it's easy to eat like a giant... ♪ and feel like a green giant. ♪ ho ho ho ♪ green giant and i'm here to tell homeowners that are 62 and older about a great way to live a better retirement. it's called a reverse mortgage. [ male announcer ] call right now to receive your free dvd and booklet with no obligation. it answers questions like how a reverse mortgage works, how much you qualify for, the ways to receive your money, and more. plus, when you call now